/*
 * Copyright 2011 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License is
 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and limitations under the License.
 */
package com.slobodastudio.discussions.utils.fragmentasynctask;

import android.os.Bundle;
import android.os.Handler;
import android.os.ResultReceiver;
import android.util.Log;

/** Proxy {@link ResultReceiver} that offers a listener interface that can be detached. Useful for when sending
 * callbacks to a {@link Service} where a listening {@link Activity} can be swapped out during configuration
 * changes. */
public class DetachableResultReceiver extends ResultReceiver {

	private static final String TAG = "DetachableResultReceiver";
	private Receiver mReceiver;

	public DetachableResultReceiver(final Handler handler) {

		super(handler);
	}

	public void clearReceiver() {

		mReceiver = null;
	}

	public void setReceiver(final Receiver receiver) {

		mReceiver = receiver;
	}

	@Override
	protected void onReceiveResult(final int resultCode, final Bundle resultData) {

		if (mReceiver != null) {
			mReceiver.onReceiveResult(resultCode, resultData);
		} else {
			Log.w(TAG, "Dropping result on floor for code " + resultCode + ": " + resultData.toString());
		}
	}

	public interface Receiver {

		public void onReceiveResult(int resultCode, Bundle resultData);
	}
}